US Bridges

SR 0030 over Mill Creek

Fair

Westmoreland County, Pennsylvania · Ligonier Township · Structure no. 000000000035966

Built
1955
70 years old, rebuilt 2003
Condition
Fair
inspected April 2021
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
125 ft
2 main spans
Daily traffic
5,393
2023 count
Owner
State
State Highway Agency

About this bridge

SR 0030 over Mill Creek is a steel continuous stringer/multi-beam or girder carrying SR 0030 over Mill Creek in Westmoreland County, Pennsylvania. It was built in 1955 and reconstructed in 2003, so it is 70 years old, older than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 5,393 vehicles a day, roughly 13% of them trucks, projected to reach 7,591 by 2032. The structure is 125 ft (38.1 m) long and 41 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSR 0030
CrossesMill Creek
LocationLigonier Township
RouteU.S. Route 30
CountyWestmoreland County
StatePennsylvania
Coordinates40.24826, -79.24882
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating79 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length125 ft (38.1 m)
Longest span58 ft (17.7 m)
Deck width41 ft (12.6 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,393 (2023)
Projected traffic7,591 by 2032
Trucks13%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$732,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 0030 over Mill Creek built?

It was built in 1955, making it 70 years old in 2025. It was reconstructed in 2003.

What condition is SR 0030 over Mill Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2021.

How much traffic does SR 0030 over Mill Creek carry?

About 5,393 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is SR 0030 over Mill Creek?

The structure is 125 ft (38.1 m) long with a longest span of 58 ft (17.7 m) and a deck 41 ft wide.

Who owns SR 0030 over Mill Creek?

It is owned by the State Highway Agency.